--power: Add information about charger

```
> sudo framework_tool --power
Place your right index finger on the fingerprint reader
Charger Status
  AC is:            not connected
  Charger Voltage:  17048mV
  Charger Current:  0mA
  Chg Input Current:384mA
  Battery SoC:      93%
Battery Status
  AC is:            not connected
  Battery is:       connected
  Battery LFCC:     3693 mAh (Last Full Charge Capacity)
  Battery Capacity: 3409 mAh
                    58.96 Wh
  Charge level:     92%
  Battery discharging
```

Signed-off-by: Daniel Schaefer <dhs@frame.work>

Author: JohnAZoidberg

EXAMPLES.md

@@ -139,6 +139,7 @@ ALS:   76 Lux
   Fan Speed:       0 RPM
 ```
 
+
 ## Check expansion bay (Framework 16)
 
 ```
@@ -149,4 +150,23 @@ Expansion Bay
   Hatch closed:  true
   Board:         DualInterposer
   Serial Number: FRAXXXXXXXXXXXXXXX
+
+## Check charger and battery status (Framework 12/13/16)
+
+```
+> sudo framework_tool --power
+Charger Status
+  AC is:            not connected
+  Charger Voltage:  17048mV
+  Charger Current:  0mA
+  Chg Input Current:384mA
+  Battery SoC:      93%
+Battery Status
+  AC is:            not connected
+  Battery is:       connected
+  Battery LFCC:     3693 mAh (Last Full Charge Capacity)
+  Battery Capacity: 3409 mAh
+                    58.96 Wh
+  Charge level:     92%
+  Battery discharging
 ```

framework_lib/src/chromium_ec/command.rs

@@ -40,6 +40,7 @@ pub enum EcCommands {
     I2cPassthrough = 0x009e,
     ConsoleSnapshot = 0x0097,
     ConsoleRead = 0x0098,
+    ChargeState = 0x00A0,
     /// List the features supported by the firmware
     GetFeatures = 0x000D,
     /// Force reboot, causes host reboot as well

framework_lib/src/chromium_ec/commands.rs

@@ -377,6 +377,38 @@ impl EcRequest<()> for EcRequestConsoleRead {
     }
 }
 
+#[repr(u8)]
+pub enum ChargeStateCmd {
+    GetState = 0,
+    GetParam,
+    SetParam,
+    NumCmds,
+}
+
+#[repr(C, packed)]
+pub struct EcRequestChargeStateGetV0 {
+    pub cmd: u8,
+    pub param: u32,
+}
+
+#[repr(C, packed)]
+pub struct EcResponseChargeStateGetV0 {
+    pub ac: u32,
+    pub chg_voltage: u32,
+    pub chg_current: u32,
+    pub chg_input_current: u32,
+    pub batt_state_of_charge: u32,
+}
+
+impl EcRequest<EcResponseChargeStateGetV0> for EcRequestChargeStateGetV0 {
+    fn command_id() -> EcCommands {
+        EcCommands::ChargeState
+    }
+    fn command_version() -> u8 {
+        0
+    }
+}
+
 /// Supported features
 #[derive(Debug, FromPrimitive)]
 pub enum EcFeatureCode {

framework_lib/src/chromium_ec/mod.rs

@@ -1083,6 +1083,29 @@ impl CrosEc {
         }
     }
 
+    pub fn get_charge_state(&self) -> EcResult<()> {
+        let res = EcRequestChargeStateGetV0 {
+            cmd: ChargeStateCmd::GetState as u8,
+            param: 0,
+        }
+        .send_command(self)?;
+        println!("Charger Status");
+        println!(
+            "  AC is:            {}",
+            if res.ac == 1 {
+                "connected"
+            } else {
+                "not connected"
+            }
+        );
+        println!("  Charger Voltage:  {}mV", { res.chg_voltage });
+        println!("  Charger Current:  {}mA", { res.chg_current });
+        println!("  Chg Input Current:{}mA", { res.chg_input_current });
+        println!("  Battery SoC:      {}%", { res.batt_state_of_charge });
+
+        Ok(())
+    }
+
     /// Check features supported by the firmware
     pub fn get_features(&self) -> EcResult<()> {
         let data = EcRequestGetFeatures {}.send_command(self)?;

framework_lib/src/power.rs

@@ -471,6 +471,7 @@ pub fn is_standalone(ec: &CrosEc) -> bool {
 }
 
 pub fn get_and_print_power_info(ec: &CrosEc) -> i32 {
+    print_err_ref(&ec.get_charge_state());
     if let Some(power_info) = power_info(ec) {
         print_battery_information(&power_info);
         if let Some(_battery) = &power_info.battery {
@@ -481,6 +482,7 @@ pub fn get_and_print_power_info(ec: &CrosEc) -> i32 {
 }
 
 fn print_battery_information(power_info: &PowerInfo) {
+    println!("Battery Status");
     print!("  AC is:            ");
     if power_info.ac_present {
         println!("connected");